arch/arm/mach-pxa/zylonite_pxa300.c

   1 /*
   2  * linux/arch/arm/mach-pxa/zylonite_pxa300.c
   3  *
   4  * PXA300/PXA310 specific support code for the
   5  * PXA3xx Development Platform (aka Zylonite)
   6  *
   7  * Copyright (C) 2007 Marvell Internation Ltd.
   8  * 2007-08-21: eric miao <eric.miao@marvell.com>
   9  *             initial version
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/kernel.h>
  18 #include <linux/init.h>
  19 #include <linux/i2c.h>
  20 #include <linux/platform_data/i2c-pxa.h>
  21 #include <linux/platform_data/pca953x.h>
  22 #include <linux/gpio.h>
  23
  24 #include "pxa300.h"
  25 #include "devices.h"
  26 #include "zylonite.h"
  27
  28 #include "generic.h"
  29
  30 /* PXA300/PXA310 common configurations */
  31 static mfp_cfg_t common_mfp_cfg[] __initdata = {
  32         /* LCD */
  33         GPIO54_LCD_LDD_0,
  34         GPIO55_LCD_LDD_1,
  35         GPIO56_LCD_LDD_2,
  36         GPIO57_LCD_LDD_3,
  37         GPIO58_LCD_LDD_4,
  38         GPIO59_LCD_LDD_5,
  39         GPIO60_LCD_LDD_6,
  40         GPIO61_LCD_LDD_7,
  41         GPIO62_LCD_LDD_8,
  42         GPIO63_LCD_LDD_9,
  43         GPIO64_LCD_LDD_10,
  44         GPIO65_LCD_LDD_11,
  45         GPIO66_LCD_LDD_12,
  46         GPIO67_LCD_LDD_13,
  47         GPIO68_LCD_LDD_14,
  48         GPIO69_LCD_LDD_15,
  49         GPIO70_LCD_LDD_16,
  50         GPIO71_LCD_LDD_17,
  51         GPIO72_LCD_FCLK,
  52         GPIO73_LCD_LCLK,
  53         GPIO74_LCD_PCLK,
  54         GPIO75_LCD_BIAS,
  55         GPIO76_LCD_VSYNC,
  56         GPIO127_LCD_CS_N,
  57         GPIO20_PWM3_OUT,        /* backlight */
  58
  59         /* BTUART */
  60         GPIO111_UART2_RTS,
  61         GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
  62         GPIO113_UART2_TXD,
  63         GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
  64
  65         /* STUART */
  66         GPIO109_UART3_TXD,
  67         GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
  68
  69         /* AC97 */
  70         GPIO23_AC97_nACRESET,
  71         GPIO24_AC97_SYSCLK,
  72         GPIO29_AC97_BITCLK,
  73         GPIO25_AC97_SDATA_IN_0,
  74         GPIO27_AC97_SDATA_OUT,
  75         GPIO28_AC97_SYNC,
  76         GPIO17_GPIO,    /* SDATA_IN_1 but unused - configure to GPIO */
  77
  78         /* SSP3 */
  79         GPIO91_SSP3_SCLK,
  80         GPIO92_SSP3_FRM,
  81         GPIO93_SSP3_TXD,
  82         GPIO94_SSP3_RXD,
  83
  84         /* WM9713 IRQ */
  85         GPIO26_GPIO,
  86
  87         /* Keypad */
  88         GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
  89         GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
  90         GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
  91         GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
  92         GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
  93         GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
  94         GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
  95         GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
  96         GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
  97         GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
  98         GPIO121_KP_MKOUT_0,
  99         GPIO122_KP_MKOUT_1,
 100         GPIO123_KP_MKOUT_2,
 101         GPIO124_KP_MKOUT_3,
 102         GPIO125_KP_MKOUT_4,
 103         GPIO4_2_KP_MKOUT_5,
 104         GPIO5_2_KP_MKOUT_6,
 105         GPIO6_2_KP_MKOUT_7,
 106
 107         /* MMC1 */
 108         GPIO3_MMC1_DAT0,
 109         GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
 110         GPIO5_MMC1_DAT2,
 111         GPIO6_MMC1_DAT3,
 112         GPIO7_MMC1_CLK,
 113         GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
 114         GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
 115
 116         /* MMC2 */
 117         GPIO9_MMC2_DAT0,
 118         GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
 119         GPIO11_MMC2_DAT2,
 120         GPIO12_MMC2_DAT3,
 121         GPIO13_MMC2_CLK,
 122         GPIO14_MMC2_CMD,
 123
 124         /* USB Host */
 125         GPIO0_2_USBH_PEN,
 126         GPIO1_2_USBH_PWR,
 127
 128         /* Standard I2C */
 129         GPIO21_I2C_SCL,
 130         GPIO22_I2C_SDA,
 131
 132         /* GPIO */
 133         GPIO18_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #0 INT_N */
 134         GPIO19_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #1 INT_N */
 135 };
 136
 137 static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
 138         /* FFUART */
 139         GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
 140         GPIO31_UART1_TXD,
 141         GPIO32_UART1_CTS,
 142         GPIO37_UART1_RTS,
 143         GPIO33_UART1_DCD,
 144         GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
 145         GPIO35_UART1_RI,
 146         GPIO36_UART1_DTR,
 147
 148         /* Ethernet */
 149         GPIO2_nCS3,
 150         GPIO99_GPIO,
 151 };
 152
 153 static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 154         /* FFUART */
 155         GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
 156         GPIO100_UART1_TXD,
 157         GPIO101_UART1_CTS,
 158         GPIO106_UART1_RTS,
 159
 160         /* Ethernet */
 161         GPIO2_nCS3,
 162         GPIO102_GPIO,
 163
 164         /* MMC3 */
 165         GPIO7_2_MMC3_DAT0,
 166         GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
 167         GPIO9_2_MMC3_DAT2,
 168         GPIO10_2_MMC3_DAT3,
 169         GPIO103_MMC3_CLK,
 170         GPIO105_MMC3_CMD,
 171 };
 172
 173 #define NUM_LCD_DETECT_PINS     7
 174
 175 static int lcd_detect_pins[] __initdata = {
 176         MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
 177         MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
 178         MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
 179         MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
 180         MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
 181         MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
 182         MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
 183 };
 184
 185 static void __init zylonite_detect_lcd_panel(void)
 186 {
 187         unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
 188         int i, gpio, id = 0;
 189
 190         /* save the original MFP settings of these pins and configure
 191          * them as GPIO Input, DS01X, Pull Neither, Edge Clear
 192          */
 193         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 194                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
 195                 pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
 196         }
 197
 198         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 199                 id = id << 1;
 200                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
 201                 gpio_request(gpio, "LCD_ID_PINS");
 202                 gpio_direction_input(gpio);
 203
 204                 if (gpio_get_value(gpio))
 205                         id = id | 0x1;
 206                 gpio_free(gpio);
 207         }
 208
 209         /* lcd id, flush out bit 1 */
 210         lcd_id = id & 0x3d;
 211
 212         /* lcd orientation, portrait or landscape */
 213         lcd_orientation = (id >> 6) & 0x1;
 214
 215         /* restore the original MFP settings */
 216         for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 217                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 218 }
 219
 220 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 221 static struct pca953x_platform_data gpio_exp[] = {
 222         [0] = {
 223                 .gpio_base      = 128,
 224         },
 225         [1] = {
 226                 .gpio_base      = 144,
 227         },
 228 };
 229
 230 static struct i2c_board_info zylonite_i2c_board_info[] = {
 231         {
 232                 .type           = "pca9539",
 233                 .dev_name       = "pca9539-a",
 234                 .addr           = 0x74,
 235                 .platform_data  = &gpio_exp[0],
 236                 .irq            = PXA_GPIO_TO_IRQ(18),
 237         }, {
 238                 .type           = "pca9539",
 239                 .dev_name       = "pca9539-b",
 240                 .addr           = 0x75,
 241                 .platform_data  = &gpio_exp[1],
 242                 .irq            = PXA_GPIO_TO_IRQ(19),
 243         },
 244 };
 245
 246 static void __init zylonite_init_i2c(void)
 247 {
 248         pxa_set_i2c_info(NULL);
 249         i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
 250 }
 251 #else
 252 static inline void zylonite_init_i2c(void) {}
 253 #endif
 254
 255 void __init zylonite_pxa300_init(void)
 256 {
 257         if (cpu_is_pxa300() || cpu_is_pxa310()) {
 258                 /* initialize MFP */
 259                 pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 260
 261                 /* detect LCD panel */
 262                 zylonite_detect_lcd_panel();
 263
 264                 /* WM9713 IRQ */
 265                 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
 266
 267                 zylonite_init_i2c();
 268         }
 269
 270         if (cpu_is_pxa300()) {
 271                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 272                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 273         }
 274
 275         if (cpu_is_pxa310()) {
 276                 pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 277                 gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 278         }
 279
 280         /* GPIOs for Debug LEDs */
 281         gpio_debug_led1 = EXT_GPIO(25);
 282         gpio_debug_led2 = EXT_GPIO(26);
 283 }